Thermally-Electrically Tunable Broadband Ultrathin Metal-Free THz Absorber

被引：17

作者：

Kumar, Abhishek ^{[1
]}

Varshney, Gaurav ^{[1
]}

机构：

[1] NIT Patna, Dept Elect & Commun Engn, Patna 800005, India

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2023年 / 35卷 / 22期

关键词：

Absorber; double-tunable; vanadium dioxide; graphene; THz; ultrathin; wideband; TERAHERTZ; ABSORPTION;

D O I：

10.1109/LPT.2023.3313935

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Thermally-electrically tunable ultrathin metal-free structure of a terahertz (THz) absorber is implemented. The switching capability in absorption response is affirmed by the thermal variations incorporated in the resonators made of phase change material Vanadium-dioxide. The frequency tunability is acquired by the variations in electronic properties of graphene material being utilized as the reflector in the absorber structure. The proposed device offers broadband absorption response of 6.26 THz bandwidth with an ultrathin geometry of thickness of lambda/66.8 mu m; lambda is free space wavelength. Furthermore, the device provides the stable response for a wide angle of incidence of more than 60(circle)

引用

页码：1235 / 1238

页数：4

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